Plant stake



FIG. 1 is a rear elevational view of a plant stake according to the design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a fragmentary perspective view of the top portion thereof.

The view of FIG. 6 is shown enlarged and fragmented for clarity of illustration. 

The ornamental design for a plant stake, as shown and described. 